JP3683747B2 - Water purifier - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a water purifier suitable for a shower head or the like, and more particularly to a water purifier having a feature in the structure of a seal portion.
[0002]
[Prior art]
In recent years, showerheads having a shower discharge function of purified water after purifying tap water and a switching function thereof have been developed in addition to the shower discharge function of tap water (raw water) containing a bactericide as a shower head.
[0003]
FIG. 5 shows an example of this type of shower head.
In the figure, reference numeral 200 denotes a main body of the shower head, which has a water passage 202 for guiding raw water, which is tap water containing a bactericide, to the tip side.
Reference numeral 204 denotes a water discharge end member (watering member) which has a cylindrical shape with a bottom, and a first water passage 202A and a second water passage 202B are partitioned and formed in an outer peripheral portion and a center portion of the inside. In addition, a plurality of shower water discharge holes 208A for purified water communicating with the water passage 202A and a plurality of shower water discharge holes 208B for raw water communicating with the water passage 202B are formed at the bottom.
[0004]
A cartridge chamber is formed inside the water discharge end member 204 and on the water passage 202A, and a purification cartridge 210 for purifying tap water is accommodated therein.
The water discharge end member 204 has an outer fitting portion 212 at the upper end portion. On the other hand, the main body 200 has an inner fitting portion 214, and the outer fitting portion 212 and the inner fitting portion 214 are connected to the female thread portion on the inner peripheral surface of the outer fitting portion 212 and the outer periphery of the inner fitting portion 214. Screwed by the male threaded portion of the surface.
That is, the water discharge end member 204 is screwed to the main body 200 in an externally fitted state, and is fixedly attached to the main body 200.
[0005]
In the case of the shower head of this example, an opening 218 for communicating the water passages 202 and 202B and an opening 220 for communicating the water passages 202 and 202A are provided inside, and the openings 218, 220 is selectively opened or closed by the movement of the valve body 216.
[0006]
Thus, when the opening 220 is closed and the opening 218 is opened, the tap water (raw water) sent through the water passage 202 on the main body 200 side has a lower end through the water passage 202B of the water discharge end member 204. Shower water is discharged from the shower water discharge hole 208B.
[0007]
Further, when the opening 218 is closed by the switching operation of the one-way valve body 216 and the opening 220 is opened, tap water from the water passage 202 flows into the water passage 202A side of the water discharge end member 204, and the tap water flows there. After being purified, that is, purified water, shower water is discharged from the shower water discharge hole 208A.
[0008]
[Problems to be solved by the invention]
By the way, in this kind of shower head, there is a flow resistance in the first water passage 202A in which the purification cartridge 210 is accommodated. In addition, when the purification cartridge 210 is clogged, the first water passage pressure is particularly high. The water pressure on the one water passage 202A side exceeds the predetermined pressure and becomes excessive, which may cause the water discharge end member 204 to be detached from the main body 200, and the water discharge end member 204 is damaged by the pressure. There is a fear.
[0009]
In order to prevent this, it is conceivable to make the water discharge end member 204 a pressure-resistant member by increasing the thickness of the water discharge end member 204 or using a high-strength material. Will be invited.
[0010]
The shower head having the shower water discharge function has been described above as an example, but this problem is solved by using a water purifier or an alkali ion water purifier or other water purifier for supplying water to the downstream process or discharging water as it is after using tap water as purified water. Can also occur in common.
[0011]
[Means for Solving the Problems]
The water purifier of the present invention has been devised to solve such problems.
Thus, according to the first aspect of the present invention, a cartridge chamber is provided on the first water passage and a purification cartridge for purifying tap water is accommodated in the cartridge chamber, and the purified water from the purification cartridge is disposed downstream of the cartridge chamber. In the water purifier that discharges water from the purified water discharge hole, a second water passage is provided adjacent to the first water passage, and the first water passage and the second water passage are provided. When the pressure in the first water flow path is increased to a predetermined pressure or higher when the water passage is sealed tightly with the packing interposed therebetween and the holding structure of the packing holding portion for holding the packing is increased. the said packing by pressure the second water passage side to the elastic deformation is caused by the structure and without missing a pressure in said first water passage into said second water passage side, front Stories second water passage is Are arranged in abutting state in the axial direction The pair of cylindrical portions are formed inside as a partition, while the first water passage is formed annularly outside the partition, and the ring-shaped packing is inserted between the pair of cylindrical portions. It is characterized by being.
[0012]
According to a second aspect of the present invention, in the water purifier according to the first aspect , the cylindrical portion is a cylindrical portion and the packing is an annular shape.
[0013]
A third aspect of the present invention is the water purification / dispensing device according to any one of the first and second aspects, wherein the holding recess is annular on the axial end and on the inner peripheral side over one or both of the pair of cylindrical portions. And the packing is fitted and held in the holding recess.
[0014]
According to a fourth aspect of the present invention, in the water purifier of any one of the first to third aspects, the packing is a flat packing.
[0015]
Claim 5 is the water purification apparatus according to any one of claims 1 to 4 , wherein the second water passage is a raw water passage for tap water that has not been purified, and the second water passage. A water discharge hole is provided at the end of the raw water.
[0016]
According to a sixth aspect of the present invention, the water purifier is a shower head.
[0017]
[Operation and effect of the invention]
As described above, the water purifier of claim 1 is provided with the second water passage adjacent to the first water passage through which the tap water is purified and passed, and a seal is interposed between the two water passages. When the pressure in the first water passage increases to a predetermined pressure or higher, the packing is elastically deformed toward the second water passage so that the water in the first water passage, that is, the pressure is passed through the second water passage. In this water purifier, it is possible to prevent the pressure in the first water passage from becoming excessively higher than a predetermined pressure due to the elastic deformation of the packing.
Therefore, it is not necessary to use a special pressure-resistant structure and pressure-resistant member as a member for forming the first water passage on the inner side. Therefore, an increase in cost can be avoided and the water passage forming member can be configured at low cost.
[0018]
In addition, when the water passage forming member that forms the first water passage such as the water discharge end member is detachably attached to the other member such as the main body of the shower head, the water passage forming member is caused by the pressure increase in the first water passage. Can also be prevented from coming off .
[0019]
This onset Ming, partition walls and without be disposed in a state abutting the pair of tubular portions each other in the axial direction, a second water passage on the inside, a first water passage formed in an annular outwardly, It is characterized in that a ring-shaped packing is interposed between the pair of cylindrical portions.
Thus in to Rukoto, on the first water passage and the second water passage was readily defined by a pair of cylindrical portions, good their first water passage and the second water passage at packings In addition, the packing can be easily elastically deformed toward the second water passage when the pressure in the first water passage increases, and the pressure in the first water passage can be reduced. Smoothly escape to the second waterway side.
[0020]
In the present invention, the cylindrical portion can be a cylindrical portion, and the packing can be an annular shape (Claim 2 ).
In addition, as a packing holding structure, an annular holding recess is provided on the axial end and on the inner peripheral side across one or both of the pair of cylindrical portions, and the packing is fitted and held in the holding recess. (Claim 3 ).
By doing so, the packing can be firmly positioned and held at a predetermined sealing position, and when the pressure in the annular first water passage on the outer peripheral side increases, the packing can be easily placed inside That is, it can be elastically deformed to the second water passage side.
[0021]
The water purifier of claim 4 uses a flat packing as the packing, and when such a flat packing is used, the pressure in the first water passage is set to the second water passage side with respect to the flat packing. It is possible to effectively act as an elastic deformation force.
[0022]
In the present invention, it is possible to keep the raw water flow passage to the second water passage and without tap water which is not clean process, the water discharge holes of the raw water at their ends provided (claim 5).
If it does in this way, it is not necessary to provide the 2nd waterway for escaping the water from a 1st waterway specially only for the purpose, and the structure of a water purifier can be simplified. .
Moreover, this water purifier can be suitably applied to a shower head that performs raw water shower water discharge and purified water shower water discharge (claim 6 ).
[0023]
【Example】
Next, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows a shower head as an example of a water purifier. In FIG. 1, reference numeral 10 denotes a main body, and a water passage that guides raw water, which is tap water containing a bactericide (chlorine), to the tip side. 12 is provided.
Reference numeral 14 denotes a water discharge end member (watering member) which has a bottomed cylindrical shape, and has a first water passage 12A and a second water passage 12B therein, and a water passage 12B at the bottom. A plurality of raw water shower spout holes 14B communicated with each other and a plurality of purified water shower spout holes 14A communicated with the water passage 12A are formed.
Here, a cartridge chamber is formed on one water passage 12A, and a purification cartridge 18 for purifying tap water is accommodated therein.
[0024]
Reference numeral 20 denotes a valve plate having an inverted dish shape, and has an opening 22 communicating with the water passage 12B and an opening 24 (see FIG. 3) communicating with the water passage 12A.
A valve body 26 is rotatably disposed on the valve plate 20.
The valve body 26 closes one of the pair of openings 22 and 24 formed in the valve plate 20 and opens the other, or closes the other and opens the other, thereby discharging the water discharge end member 14. Either one of the water passage 12A on the side or the water passage 12B is selectively communicated with the water passage 12 on the main body 10 side.
[0025]
The valve body 26 is provided with a shaft portion 28, and the shaft portion 28 is connected to an operation portion 30 provided in a form protruding from the outer surface of the main body 10 in an integrally rotated state. That is, in this example, as shown in FIG. 4, the valve body 26 rotates and slides on the upper surface of the valve plate 20 by the operation of the operation unit 30 to selectively close or open the openings 22 and 24.
[0026]
The main body 10 is provided with a cylindrical inner fitting portion 36.
The water discharge end member 14 is provided with a corresponding cylindrical outer fitting portion 38, and the inner fitting portion 36 and the outer fitting portion 38 are male screw portions on the outer peripheral surface of the inner fitting portion 36. And a female screw portion on the inner peripheral surface of the outer fitting portion 38. That is, the water discharge end member 14 is screwed at the inner fitting portion 36 and the outer fitting portion 38 and assembled to the main body 10.
The inner fitting portion 36 is also water-tightly fitted to the cylindrical outer peripheral wall portion of the valve plate 20.
[0027]
In the shower head of this example, the valve body 26 is in the state shown in FIGS. 3A and 4I, that is, the state in which the opening 22 of the valve plate 20 is closed and the other opening 24 is opened. When the tap water is supplied through the water passage 12, the tap water flows into the water passage 12 </ b> A through the opening 24, passes through the purification cartridge 18, is purified, and is discharged from the shower water discharge hole 14 </ b> A.
[0028]
On the other hand, tap water is passed through the water passage 12 under the state shown in FIGS. 3 (B) and 4 (III), that is, the opening 24 is closed and the opening 22 is opened by operating the operation unit 30. When the water is supplied, the tap water (raw water) flows into the water passage 12B through the opening 22 and is discharged as it is from the shower water discharge hole 14B for raw water.
[0029]
The water discharge end member 14 is integrally formed with the cylindrical portion 16 standing upward in the center and at the inside thereof. The one valve plate 20 is integrally formed with a short cylindrical portion 32 falling downward at the center thereof, and the pair of cylindrical portions 16 and 32 are in contact with each other in the axial direction. The pair of cylindrical portions 16 and 32 constitute a partition wall 40 that partitions the central water passage 12B and the outer circumferential annular water passage 12A.
[0030]
Between the pair of cylindrical portions 16 and 32, as shown in FIG. 2, a flat packing 34 having an annular shape and a quadrangular cross section is sandwiched between the cylindrical portions 16 and 32 in the axial direction. The first water passage 12 </ b> A and the second water passage 12 </ b> B are sealed in a watertight manner by the flat packing 34.
[0031]
The flat packing 34 is held in a positioned state by a packing holding portion 42 (see FIG. 1) provided on the cylindrical portion 16 side.
The packing holding portion 42 has an annular holding recess 44 provided on the shaft end portion and the inner peripheral side of the cylindrical portion 16, and the flat packing 34 is fitted and held inside the holding recess 44.
[0032]
The holding recess 44 has an open shape on the inner peripheral side, and the flat packing 34 held here is in an unconstrained state on the inner peripheral side, that is, the second water passage 12B side, and is caused by pressure from the outer peripheral side. The flat packing 34 can be elastically deformed to the inner peripheral side.
On the other hand, there is a bank portion 46 on the outer peripheral side, and the flat packing 34 is in a state where the outer peripheral surface is in contact with the bank portion 46, and is not elastically deformable radially outward, that is, on the first water passage 12A side. is there.
[0033]
In the case of the shower head of this example, when the pressure in the water passage 12A becomes higher than a predetermined pressure due to the clogging of the purification cartridge 18 or the like, as shown in FIG. The flat packing 34 is elastically deformed radially inward, that is, toward the water passage 12B, allows water in the water passage 12A to flow into the water passage 12B, and releases the pressure in the water passage 12A toward the water passage 12B.
[0034]
Therefore, the pressure on the side of the water passage 12A is not excessively increased, and therefore, the water discharge end member 14 is not detached from the main body 10 due to the pressure increase, and the water discharge end member 14 is excessive pressure. The problem that it breaks by does not arise.
[0035]
Therefore, it is not particularly necessary to make the water discharge end member 14 thicker or use a high-strength material to form a pressure-resistant structure and pressure-resistant member, and thus the water discharge end member 14 can be configured at low cost .
[0036]
Although the embodiment of the present invention has been described in detail above, this is merely an example.
For example, in the above example, a holding recess 44 is provided on the cylindrical portion 16 side of the water discharge end member 14 so that the flat packing 34 is held there, but the holding recess may be provided on the cylindrical portion 32 side of the valve plate 20 in some cases. It is also possible to provide them, or it is also possible to provide a holding recess across the pair of cylindrical parts 16 and 32 and hold the flat packing 34 there.
[0037]
In addition to the above shower head, the present invention also includes a water purifier or a purification cartridge that purifies tap water and supplies it to the downstream process or discharges water as it is, and an alkali ion water purifier or other water purifier equipped with a water purifying function. The present invention can be applied to a water discharge device, and can be configured in various forms without departing from the gist thereof.
[Brief description of the drawings]
FIG. 1 is a view showing a shower head according to an embodiment of the present invention.
FIG. 2 is an exploded view of the shower head of FIG. 1 into each member.
FIG. 3 is a side cross-sectional view showing an operation state of the shower head of FIG.
4 is a cross-sectional plan view showing an operational state of the shower head of FIG.
FIG. 5 is a view showing a main part of a shower head as an example of a conventional water purifier.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Main body 12A 1st water flow path 12B 2nd water flow path 14 Water discharge end part member 14A, 14B Shower water discharge hole 16, 32 Cylindrical part 18 Purification cartridge 34 Flat packing 40 Bulkhead 42 Packing holding part 44 Holding recessed part

Claims (6)

A cartridge chamber is provided on the first water passage, a purification cartridge for purifying tap water is accommodated in the cartridge chamber, and purified water from the purification cartridge is discharged from a purified water discharge hole on the downstream side of the cartridge chamber. In the made water purifier,
A second water passage is provided adjacent to the first water passage, and a packing is interposed between the first water passage and the second water passage so that each water passage is sealed watertight by the packing. And when the pressure in the first water passage is increased to a predetermined pressure or higher, the packing is elastically deformed toward the second water passage by the pressure. And having a structure in which the pressure in the first water passage is released to the second water passage side ,
Before Stories second water passage, while that formed inside the pair of cylindrical portions disposed in a state abutting each other in the axial direction as a partition, the first water passage is formed annularly on the outside of the partition wall , water purification water discharge device, characterized in that between them a pair of cylindrical portions are interposed a ring of the packing. 2. The water purifier according to claim 1 , wherein the cylindrical portion is a cylindrical portion and the packing is an annular shape. The water purifier according to any one of claims 1 and 2 , wherein an annular holding recess is provided on one end of the pair of cylindrical portions and an inner peripheral side, and the holding recess is provided on the holding recess. A water purifier having the packing inserted and held therein. The water purifier according to any one of claims 1 to 3 , wherein the packing is a flat packing. The water purifier according to any one of claims 1 to 4 , wherein the second water passage is a raw water passage for tap water that has not been subjected to purification treatment, and a raw water spout at the end of the second water passage. A water purifier with a water purifier. The water purifier according to any one of claims 1 to 5 , wherein the water purifier is a shower head.

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